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SpyIntel [72]
3 years ago
6

The process of radioactive decay is unpredictable and irreversible. Which option would be an appropriate model of the radioactiv

e decay of a group of atoms? (1 point)
O petals falling from a flower
o throwing tennis balls over a fence
O breaking off pieces of wet clay
O popping a bag of popcorn
Pleaseeeeee help
Chemistry
1 answer:
Vilka [71]3 years ago
3 0

The appropriate model of the radioactive decay of a group of atoms is popping a bag of popcorn.

The key thing that we must keep in mind is that the radioactive process is "irreversible". This means that we can not turn the process around on it occurs. If it happens, then it is final.

The model that must choose must accurately reflect this observation. The only model that comes close to this is popping a bag of popcorn.

Hence, popping a bag of popcorn is the appropriate model of the radioactive decay of a group of atoms.

Learn more: brainly.com/question/20475641

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PLeaseee ITS Timedddd + BrainlIESTT
zmey [24]

Answer:

d. 12.3 grams of Al2O3

Explanation:

Based on the reaction:

4Al + 3O2 → 2Al2O3

<em>Where 4 moles of Al reacts in excess of oxygen to produce 2 moles of aluminium oxide.</em>

<em />

To solve this question we must find the moles of Aluminium. With these moles we can find the moles of aluminium oxide using the reaction:

<em>Moles Al -Molar mass: 26.9815g/mol-</em>

6.50g * (1mol / 26.9815g) = 0.241 moles Al

<em>Mass Al₂O₃ -Molar mass: 101.96g/mol-</em>

0.241 moles Al * (2 mol Al2O3 / 4 mol Al) = 0.120 moles Al2O3

0.120 moles Al2O3 * (101.96g / mol) =

12.3g of Al2O3 are produced.

Right answer is:

<h3>d. 12.3 grams of Al2O3 </h3>

8 0
3 years ago
Which of earths spheres contains most of its mass?
zysi [14]
The geosphere is about 99.94% of Earth's mass, so C is the answer.
8 0
3 years ago
Read 2 more answers
Democritus contributed to our understanding of the atom in which of the following ways?
Marianna [84]
I believe the answer is 3 - He hypothesized that all substances can be broken down into a smallest part called the atom. 
7 0
3 years ago
Read 2 more answers
Animals use oxygen in the process of <br> blank<br> and emit CO2 as a byproduct.
Temka [501]

Answer:

Respiration

Explanation:

The act of breathing, simple as that!

Hope this helped!!

4 0
3 years ago
Select the molecule where free rotation around one or more bonds is not possible. Group of answer choices N2H4 C2Cl4 NH3 C2H6 CC
Alexandra [31]

Answer:

C₂Cl₄

Explanation:

To know if free rotation around a bond in a compound is possible, we need to see the structure of the compound (picture in attachment).

In single bonds, which are formed by σ bonds, the atoms are not fixed in a single position, and free rotation is permitted.

Double and triple bonds are formed by a σ bond and one or two π bonds, respectively. These bonds do not allow rotation, since it is not possible to twist the ends without breaking the π bond.

The chloroethylene (C₂Cl₄) has two carbons with an sp2-sp2 hybridization, they are bonded together by a double bond. <u>Free rotation on this bond is not possible, because six atoms, including the carbon atoms, doubly bonded and the four chlorine atoms bonded to them, must be on the same plane. </u>

4 0
3 years ago
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